this one is hard.. i would say any car that is body on frame, its fun to rip off the bodies of the car. if i had to choose.. i would say the h-series
I don't really have favorite but one of the best things to do for me is to completely remove the T-series cab Violently and still have the engine work while one one the fuel tanks is on fire.
Definitely the Barstow, because this happens. That blue thing stuck to the barrier on the left, at the back of shot? That's the rest of it.